[FFmpeg-devel] Channel layouts for aac encoding/decoding and vorbis decoding
Mon Aug 10 15:29:37 CEST 2009
Jason Tackaberry wrote:
> On Mon, 2009-08-10 at 11:45 +0200, Benjamin Larsson wrote:
>> The internal ffmpeg channel order that is used is based on the wav file
> Which, for 6 channels at least, is the same as the SMPTE-ITU-R order.
> But the order defined by Microsoft seems to be more thorough, so it's
> good to know that's the reference.
> Now, when you say "internal," do you mean "completely transparent to the
> API caller?" Because I'm more inquiring about the order that is visible
> to me as the user of the API (and specifically which layout goes into
> and comes out of AAC and Vorbis codecs).
The FFmpeg codecs should use that layout for output and input. Though
there are still some codecs that do not adhere to that.
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